子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | MULTICORE FIBER AND MANUFACTURING METHOD OF MULTICORE FIBER | US15440228 | 2017-02-23 | US20170160466A1 | 2017-06-08 | Katsunori IMAMURA; Tomohiro GONDA; Ryuichi SUGIZAKI; Taiji SAKAMOTO; Takayoshi MORI; Masaki WADA; Takashi YAMAMOTO; Fumihiko YAMAMOTO |
| A multicore fiber includes a plurality of unit multicore fibers each including: a plurality of core portions; and a clad portion which is formed in an outer circumference of the core portions and has a refractive index lower than a maximum refractive index of the core portions. The plurality of the core portions have substantially same refractive index profile and different group delays at same wavelength in same propagation mode. The core portions of the multicore fiber are configured so that the core portions of the plurality of the unit multicore fibers are connected in cascade, a maximum value of differential group delays between the core portions of the multicore fiber is smaller than a reduced value of a maximum value of differential group delays between the core portions of each unit multicore fiber as a value in terms of a length of the multicore fiber. | ||||||
| 102 | High-efficiency parallel-beam laser optical fibre drawing method and optical fibre | US14909441 | 2014-08-21 | US09647413B2 | 2017-05-09 | Cheng Du; Wei Chen; Shiyu Li; Yili Ke; Qi Mo; Tao Zhang; Wenyong Luo; Kun Du; Rong Dan |
| Provided are a high-efficiency parallel-beam laser optical fiber drawing method and optical fiber, the method including the steps of: S1: providing base planes on the side surfaces of both a gain optical fiber preform and a pump optical fiber preform, inwardly processing the base plane of the gain optical fiber preform to make a plurality of ribs protrude, and inwardly providing a plurality of grooves on the base plane of the pump optical fiber preform; S2: embedding the ribs into the grooves, tapering and fixing one end of the combination of the ribs and the grooves to form a parallel-beam laser optical fiber preform; S3: drawing the parallel-beam laser optical fiber preform into parallel-beam laser optical fibers. The process has high repeatability, and the obtained parallel-beam laser achieves peelability of pump optical fibers in a set area, thus facilitating multi-point pump light injection of parallel-beam laser optical fibers. | ||||||
| 103 | ISOTHERMAL PLASMA CVD SYSTEM FOR REDUCED TAPER IN OPTICAL FIBER PREFORMS | US14339586 | 2014-07-24 | US20160023939A1 | 2016-01-28 | John C. Alonzo; David D. Braganza; Merrill H. Brodeur; James W. Fleming |
| A chemical vapor deposition (CVD) system is configured to reduce the presence of geometrical and optical taper at the end sections of the preform, or more generally controlling the axial profile of the fabricated optical fiber preform. The system is configured to create an isothermal plasma within the substrate tube, with a relatively confined deposition zone located upstream of the plasma. A reagent delivery system is configured to adjust the composition and concentration of the introduced species in sync with the movement of the plasma and deposition zone within the substrate tube. By synchronizing the movement of the plasma with the adjustable reagent delivery system, it is possible to provide precision control of the axial profile of the created optical fiber preform. | ||||||
| 104 | Optical fiber with a low-index core and a core grating | US14158979 | 2014-01-20 | US09234998B2 | 2016-01-12 | Ming-Jun Li; Gaozhu Peng |
| An optical fiber with a low-index core and a core grating has a solid and generally cylindrical annular cladding having a refractive index ncl, a central axis, an inner surface with a radius r wherein r≧2 μm, an outer surface with a radius R, and an annular thickness ΔR≧10 μm. The fiber core has the radius r and a refractive index nc, wherein ncl>nc. The grating is defined by grating elements that extend from the cladding inner surface into the core and that run generally parallel to the central axis. The grating elements define a period Λ, a width t, a spacing a and a height h, wherein 0.5<Λ/λ<1 and wherein 0.2≦t/a≦3. | ||||||
| 105 | OPTICAL FIBER WITH A LOW-INDEX CORE AND A CORE GRATING | US14158979 | 2014-01-20 | US20150277033A1 | 2015-10-01 | Ming-Jun Li; GAOZHU PENG |
| An optical fiber with a low-index core and a core grating has a solid and generally cylindrical annular cladding having a refractive index ncl, a central axis, an inner surface with a radius r wherein r≧2 μm, an outer surface with a radius R, and an annular thickness ΔR≧10 μm. The fiber core has the radius r and a refractive index nc, wherein ncl>nc. The grating is defined by grating elements that extend from the cladding inner surface into the core and that run generally parallel to the central axis. The grating elements define a period , a width t, a spacing a and a height h, wherein 0.5 | ||||||
| 106 | Ultra small core fiber with dispersion tailoring | US13448003 | 2012-04-16 | US08467648B2 | 2013-06-18 | Liang Dong; Brian Thomas; Libin Fu |
| Various embodiments of optical fiber designs and fabrication processes for ultra small core fibers (USCF) are disclosed. In some embodiments, the USCF includes a core that is at least partially surrounded by a region comprising first features. The USCF further includes a second region at least partially surrounding the first region. The second region includes second features. In an embodiment, the first features are smaller than the second features, and the second features have a filling fraction greater than about 90 percent. The first features and/or the second features may include air holes. Embodiments of the USCF may provide dispersion tailoring. Embodiments of the USCF may be used with nonlinear optical devices configured to provide, for example, a frequency comb or a supercontinuum. | ||||||
| 107 | Optical fiber and method for making such fiber | US12511311 | 2009-07-29 | USRE44288E1 | 2013-06-11 | Ronald L. Kimball; Robert A. Knowlton; Joseph E. McCarthy; Ji Wang; Donnell T. Walton; Luis A. Zenteno |
| According to one example of the invention an optical fiber comprises: (i) silica based, rare earth doped core having a first index of refraction n1; (ii) at least one silica based cladding surrounding the core and having a second index of refraction n2, such that n1>n2; wherein at least one of the core or cladding is doped with Al2O3, such that the ratio of max wt % to min wt % of Al2O3 concentration is less than 2:1. | ||||||
| 108 | HEXAGONAL TUBE STACKING METHOD FOR THE FABRICATION OF HOLLOW CORE PHOTONIC BAND GAP FIBERS AND PREFORMS | US12960650 | 2010-12-06 | US20120141080A1 | 2012-06-07 | Daniel J Gibson; Jasbinder S. Sanghera; Frederic H. Kung; Ishwar D. Aggarwal |
| The present invention is generally directed to a method of making a hollow-core photonic band gap preform from a specialty glass by pressing a specialty glass through a die to form a tube wherein the outer transverse shape of the tube is a hexagon, triangle, quadrilateral, or other polygon; stretching the tube to form a micro-tube with approximately the same outer transverse shape as the tube; stacking a plurality of micro-tubes into a bundle minimizing voids between adjacent micro-tubes and forming a central longitudinal void wherein the plurality of micro-tubes within the bundle comprise an inner structured region of the preform and the central void of the bundle comprises a hollow core in the preform; and inserting the bundle into a jacket tube. Also disclosed are the hollow-core photonic band gap preform and fiber formed by this method. | ||||||
| 109 | Ultra small core fiber with dispersion tailoring | US12407663 | 2009-03-19 | US08165441B2 | 2012-04-24 | Liang Dong; Brian Thomas; Libin Fu |
| Various embodiments of optical fiber designs and fabrication processes for ultra small core fibers (USCF) are disclosed. In some embodiments, the USCF includes a core that is at least partially surrounded by a region comprising first features. The USCF further includes a second region at least partially surrounding the first region. The second region includes second features. In an embodiment, the first features are smaller than the second features, and the second features have a filling fraction greater than about 90 percent. The first features and/or the second features may include air holes. Embodiments of the USCF may provide dispersion tailoring. Embodiments of the USCF may be used with nonlinear optical devices configured to provide, for example, a frequency comb or a supercontinuum. | ||||||
| 110 | SIDE-EMITTING STEP INDEX FIBER | US12867735 | 2009-02-03 | US20110103757A1 | 2011-05-05 | Jochen Alkemper; Bernd Hoppe; Schulthies Bernd; Simone Monika Ritter; Inka Henze; Detlef Wolff; Axel Curdt |
| Side-emitting step index fibers. Between core and cladding, the side-emitting step index fibers have scattering centers that ensure the coupling out of light from the fiber. The side-emitting step index fibers are produced by preforms that contain inlay rods, in which the scattering centers are embedded and which are applied to the outer region of the fiber core during fiber drawing. Alternatively, at least one inlay tube can be used. | ||||||
| 111 | Fabrication of nanowires | US12089986 | 2006-10-12 | US07848607B2 | 2010-12-07 | Tanya Monro; Heike Ebendorff-Heidepriem |
| A method of forming a nanowire is disclosed. In one embodiment, a primary preform is formed comprising at least one central region and a support structure. The primary preform is then drawn to a cane, which is then inserted into an outer portion, to form a secondary preform. The secondary preform is then drawn until the at least one central portion is a nanowire. The method can produce nanowires of far greater length than existing methods, and can reduce the likelihood of damaging the nanowire when handling. | ||||||
| 112 | Tellurite optical fiber and production method thereof | US10537179 | 2004-08-12 | US07677059B2 | 2010-03-16 | Atsushi Mori; Masao Kato; Kouji Enbutsu; Shinichi Aozasa; Kiyoshi Oikawa; Takashi Kurihara; Kazuo Fujiura; Makoto Shimizu; Kouji Shikano |
| A fabrication method of an optical fiber using as a core material tellurite glass. The method includes a first process of molding a tellurite glass melt into a mold, the mold having a plurality of convex portions defining an inner wall, which portions run parallel to each other in a longitudinal direction in order to make a polygon columnar glass preform, and a second process of inserting the glass preform into a cylindrical jacket tube made of tellurite glass and carrying out fiber-drawing under pressure so as to maintain or enlarge air holes which are gaps generated between the glass preform and the jacket tube. | ||||||
| 113 | Fabrication of microstructured fibres | US10469541 | 2002-03-09 | US07155097B2 | 2006-12-26 | Christian Jakobsen; Jes Broeng; Guillaume Vienne; Peter M. Skovgaard |
| A preform for a microstructured fibre or a part for a preform for a microstructured fibre. The preform or part has a length in the longitudinal direction and a cross section perpendicular thereto, and includes a rod arranged at the centre of the preform or part, with one or more tubes being concentric to the rod. The rod is sleeved inside a first of the concentric tubes, and the rod and/or at least one of the concentric tubes has grooves and/or slits extending in the longitudinal direction, with the number of innermost longitudinally extending grooves and/or slits with respect to a centre of the preform or part being at least six. | ||||||
| 114 | Fabrication of microstructured optical fibre | US10507278 | 2003-03-06 | US20060104582A1 | 2006-05-18 | Kenneth Frampton; Daniel Hewak; Kai Kiang; Tanya Monro; Roger Moore; David Richardson; Harvey Rutt; John Tucknott |
| Microstructured optical fibre is fabricated using extrusion. The main design of optical fibre has a core suspended in an outer wall by a plurality of struts. A specially designed extruder die is used which comprises a central feed channel, flow diversion channels arranged to divert material radially outwards into a welding chamber formed within the die, a core forming conduit arranged to receive material by direct onward passage from the central feed channel, and a nozzle having an outer part in flow communication with the welding chamber and an inner part in flow communication with the core forming conduit, to respectively define an outer wall and core of the preform. With this design a relatively thick outer wall can be combined with thin struts (to ensure extinction of the optical mode field) and a core of any desired diameter or other thickness dimension in the case of non-circular cores. As well as glass, the extrusion process is suitable for use with polymers. The microstructured optical fibre is considered to have many potential device applications, in particular for non-linear devices, lasers and amplifiers. | ||||||
| 115 | Photonic band gap fiber | US09282303 | 1999-03-31 | US06845204B1 | 2005-01-18 | Jes Broeng; Stig Eigil Barkou; Anders Overgaard Bjarklev |
| An optical fiber having a periodical cladding structure providing an photonic band gap structure with superior qualities. The periodical structure being one wherein high index areas are defined and wherein these are separated using a number of methods. One such method is the introduction of additional low index elements, another method is providing elongated elements deformed in relation to a circular cross section. Also described is a cladding structure comprising elongated elements of a material having an index of refraction higher than that of the material adjacent thereto. Using this additional material, prior art structures may obtain much better qualities. | ||||||
| 116 | Fabrication of microstructured fibres | US10469541 | 2004-03-18 | US20040179796A1 | 2004-09-16 | Christian Jakobsen; Jes Broeng; Guillaume Vienne; Peter M. Skovggaard |
| Fabrication of microstructured fibres using stacking of a multitude of capillary tubes or using extrusion-based methods may be disadvantageous for a number of reasons, including low longitudinal uniformity, poor cleanness, low reproducibility, high polarization mode dispersion, limited flexibility of fibre design etc. The present inventors have, however, realized that the use of extrusion or a multitude of capillary tubes for the fabrication of micro-structured fibres with periodic cladding structure(s) is not required. The present invention provides new methods for fabrication of the preforms and more simple means for realising preform of high cleanliness. The present inventors have further realised manners of reducing splicing losses between microstructured fibres and conventional fibres, as well as splicing losses between two microstructured fibres. | ||||||
| 117 | Cladding-pumped optical fiber and methods for fabricating | US10287322 | 2002-11-04 | US06779364B2 | 2004-08-24 | Kanishka Tankala; Adrian Carter |
| Disclosed is an optical fiber article for receiving pump radiation of a first wavelength for amplifying or generating radiation of a second wavelength. The optical fiber article includes a core for propagating light of the second wavelength. The core has a first index of refraction and includes a rare earth material. A cladding surrounds the core and has a second index of refraction that is less than the first index of refraction. The outer circumference of the cladding can include a plurality of sections, where the plurality of sections includes at least one substantially straight section and one inwardly curved section. The optical fiber article can also include at least one outer layer surrounding the cladding, where the index of refraction of the outer layer is less than the second refractive index. Methods for producing the optical fiber article are also disclosed, as well as methods for providing a preform for drawing such an optical fiber article. | ||||||
| 118 | Preform Holey optical fibre, a holey optical fibre, and a method for their production | US10476296 | 2004-03-29 | US20040151450A1 | 2004-08-05 | William John Wadsworth; Brian Joseph Mangan; Timothy Adam Birks; Jonathan Cave Knight; Philip St John Russell |
| A holey optical fibre for supporting propagation of light of a wavelength null,comprises a plurality of cylinders (10) each having a longitudinal axis, the cylinders (10) being separated from each other by regions of a matrix material (20) and having their longitudinal axes substantially parallel to each other. Each cylinder (10) has a diameter, in the plane perpendicular to the longitudinal axis, that is small enough for the composite material of the ensemble of cylinders and matrix material to be substantially optically homogenous in respect of light of wavelength null. | ||||||
| 119 | Optical fibres with special bending and dispersion properties | US10416023 | 2003-10-15 | US20040052484A1 | 2004-03-18 | Jes Broeng; Stig Eigil Barkou Libori; Anders Overgaard Bjarklev |
| A microstructured optical fibre having a specially designed cladding to provide single mode waveguidance and low sensitivity to bending losses. In one aspect the optical fibre has an inner and an outer cladding each comprising elongated features. The inner cladding features have normalized dimensions in the range from 0.35 to 0.50 and the outer cladding features have normalized dimensions in the range from 0.5 to 0.9, where the normalization factor is a typical feature spacing. THe fibre is further characterized by a feature spacing of the inner cladding larger than 2.0 micron. In a second aspect, the fibre has a special non-circular and non-equilateral-polygonial outer cross-sectional shape to mechanically ensure bending in predetermined directions that are favourable with respect to low bending losses. The present invention provides fibres, which are less sensitive to macrobending losses than presently known single-mode fibres with similar sized mode areas, and provides robust, single-mode, large-mode area fibres for long-distance optical transmission and fibres with special dispersion properties. | ||||||
| 120 | Microstructured optical fibres | US09719132 | 2000-12-08 | US06539155B1 | 2003-03-25 | Jes Broeng; Stig Eigil Barkou; Anders Overgaard Bjarklev |
| The present invention relates to a new class of optical waveguides, in which waveguiding along one or more core regions is obtained through the application of the Photonic Bandgap (PBG) effect. The invention further relates to optimised two-dimensional lattice structures capable of providing complete PBGs, which reflects light incident from air or vacuum. Such structures may be used as cladding structures in optical fibers, where light is confined and thereby guided in a hollow core region. In addition, the present invention relates to designs for ultra low-loss PBG waveguiding structures, which are easy to manufacture. Finally, the present invention relates to a new fabrication technique, which allows easy manufacturing of preforms for photonic crystal fibers with large void filling fractions, as well as it allows a high flexibility in the design of the cladding and core structures. | ||||||
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